| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.druid.segment.incremental; |
| |
| import com.google.common.base.Function; |
| import com.google.common.base.Joiner; |
| import com.google.common.base.Predicate; |
| import com.google.common.base.Splitter; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Iterables; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Sets; |
| import org.apache.druid.data.input.InputRow; |
| import org.apache.druid.data.input.Row; |
| import org.apache.druid.data.input.impl.SpatialDimensionSchema; |
| import org.apache.druid.java.util.common.ISE; |
| import org.joda.time.DateTime; |
| |
| import javax.annotation.Nullable; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * We throw away all invalid spatial dimensions |
| */ |
| public class SpatialDimensionRowTransformer implements Function<InputRow, InputRow> |
| { |
| private static final Joiner JOINER = Joiner.on(","); |
| private static final Splitter SPLITTER = Splitter.on(","); |
| |
| private final Map<String, SpatialDimensionSchema> spatialDimensionMap; |
| private final Set<String> spatialPartialDimNames; |
| |
| public SpatialDimensionRowTransformer(List<SpatialDimensionSchema> spatialDimensions) |
| { |
| this.spatialDimensionMap = new HashMap<>(); |
| for (SpatialDimensionSchema spatialDimension : spatialDimensions) { |
| if (this.spatialDimensionMap.put(spatialDimension.getDimName(), spatialDimension) != null) { |
| throw new ISE("Duplicate spatial dimension names found! Check your schema yo!"); |
| } |
| } |
| this.spatialPartialDimNames = Sets.newHashSet( |
| Iterables.concat( |
| Lists.transform( |
| spatialDimensions, |
| new Function<SpatialDimensionSchema, List<String>>() |
| { |
| @Override |
| public List<String> apply(SpatialDimensionSchema input) |
| { |
| return input.getDims(); |
| } |
| } |
| ) |
| ) |
| ); |
| } |
| |
| @Override |
| public InputRow apply(final InputRow row) |
| { |
| final Map<String, List<String>> spatialLookup = new HashMap<>(); |
| |
| // remove all spatial dimensions |
| final List<String> finalDims = Lists.newArrayList( |
| Iterables.filter( |
| row.getDimensions(), |
| new Predicate<String>() |
| { |
| @Override |
| public boolean apply(String input) |
| { |
| return !spatialDimensionMap.containsKey(input) && !spatialPartialDimNames.contains(input); |
| } |
| } |
| ) |
| ); |
| |
| InputRow retVal = new InputRow() |
| { |
| @Override |
| public List<String> getDimensions() |
| { |
| return finalDims; |
| } |
| |
| @Override |
| public long getTimestampFromEpoch() |
| { |
| return row.getTimestampFromEpoch(); |
| } |
| |
| @Override |
| public DateTime getTimestamp() |
| { |
| return row.getTimestamp(); |
| } |
| |
| @Override |
| public List<String> getDimension(String dimension) |
| { |
| List<String> retVal = spatialLookup.get(dimension); |
| return (retVal == null) ? row.getDimension(dimension) : retVal; |
| } |
| |
| @Override |
| public Object getRaw(String dimension) |
| { |
| List<String> retVal = spatialLookup.get(dimension); |
| return (retVal == null) ? row.getRaw(dimension) : retVal; |
| } |
| |
| @Override |
| public Number getMetric(String metric) |
| { |
| return row.getMetric(metric); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return row.toString(); |
| } |
| |
| @Override |
| public int compareTo(Row o) |
| { |
| return getTimestamp().compareTo(o.getTimestamp()); |
| } |
| }; |
| |
| for (Map.Entry<String, SpatialDimensionSchema> entry : spatialDimensionMap.entrySet()) { |
| final String spatialDimName = entry.getKey(); |
| final SpatialDimensionSchema spatialDim = entry.getValue(); |
| |
| List<String> dimVals = row.getDimension(spatialDimName); |
| if (dimVals != null && !dimVals.isEmpty()) { |
| if (dimVals.size() != 1) { |
| throw new ISE("Spatial dimension value must be in an array!"); |
| } |
| if (isJoinedSpatialDimValValid(dimVals.get(0))) { |
| spatialLookup.put(spatialDimName, dimVals); |
| finalDims.add(spatialDimName); |
| } |
| } else { |
| List<String> spatialDimVals = new ArrayList<>(); |
| for (String dim : spatialDim.getDims()) { |
| List<String> partialDimVals = row.getDimension(dim); |
| if (isSpatialDimValsValid(partialDimVals)) { |
| spatialDimVals.addAll(partialDimVals); |
| } |
| } |
| |
| if (spatialDimVals.size() == spatialDim.getDims().size()) { |
| spatialLookup.put(spatialDimName, Collections.singletonList(JOINER.join(spatialDimVals))); |
| finalDims.add(spatialDimName); |
| } |
| } |
| } |
| |
| return retVal; |
| } |
| |
| private boolean isSpatialDimValsValid(List<String> dimVals) |
| { |
| if (dimVals == null || dimVals.isEmpty()) { |
| return false; |
| } |
| for (String dimVal : dimVals) { |
| if (tryParseFloat(dimVal) == null) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private boolean isJoinedSpatialDimValValid(String dimVal) |
| { |
| if (dimVal == null || dimVal.isEmpty()) { |
| return false; |
| } |
| Iterable<String> dimVals = SPLITTER.split(dimVal); |
| for (String val : dimVals) { |
| if (tryParseFloat(val) == null) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| @Nullable |
| private static Float tryParseFloat(String val) |
| { |
| try { |
| return Float.parseFloat(val); |
| } |
| catch (NullPointerException | NumberFormatException e) { |
| return null; |
| } |
| } |
| |
| /** |
| * Decodes encodedCoordinate. |
| * |
| * @param encodedCoordinate encoded coordinate |
| * |
| * @return decoded coordinate, or null if it could not be decoded |
| */ |
| @Nullable |
| public static float[] decode(final String encodedCoordinate) |
| { |
| if (encodedCoordinate == null) { |
| return null; |
| } |
| |
| final ImmutableList<String> parts = ImmutableList.copyOf(SPLITTER.split(encodedCoordinate)); |
| final float[] coordinate = new float[parts.size()]; |
| |
| for (int i = 0; i < coordinate.length; i++) { |
| final Float floatPart = tryParseFloat(parts.get(i)); |
| if (floatPart == null) { |
| return null; |
| } else { |
| coordinate[i] = floatPart; |
| } |
| } |
| |
| return coordinate; |
| } |
| } |